2026 NPPES data Hematology & Oncology Physician NPI 1124128046 M.D.
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JOHN DUNN, M.D.

Hematology & Oncology Physician in DOTHAN, Alabama. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
2K
Medicare Part D claims · 299 beneficiaries · Hematology & Oncology Physician avg: 847
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]
Industry payments
$2.6K
125 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JOHN DUNN, M.D. is a Hematology & Oncology Physician ([object Object]) practicing in DOTHAN, Alabama with a Medicare Part D prescribing footprint of 2K claims across 299 beneficiaries — 19% brand-name prescribing . Their CMS MIPS Final Score of 100/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $2.6K across 125 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JOHN DUNN, M.D. reported a CMS MIPS final score of 100 out of 100, above the 83.1 national average, and filed 1,972 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JOHN DUNN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

JOHN DUNN, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 09/22/2006

NPI 1124128046

Primary specialty

Hematology & Oncology Physician

Mid-sized

11,215 US NPIs in this specialty

Medicare Part D claims

1,972 133% vs specialty avg

2023 prescription claims

Specialty avg: 847

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Alabama

How Hematology & Oncology Physician compares to other specialties among Alabama providers

Alabama providers

Hematology & Oncology Physician share within Alabama

1. Hematology & Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Hematology & Oncology Physician share within Alabama

Medicare quality performance — MIPS

JOHN DUNN, M.D.'s 2023 MIPS final score plotted against the Hematology & Oncology Physician national average

High performer (top quartile)
MIPS Final Score
100/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Hematology & Oncology Physician) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Hematology & Oncology Physician) — 100/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

JOHN DUNN, M.D. is a Hematology & Oncology Physician provider practicing in DOTHAN, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1124128046. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

JOHN DUNN, M.D. appears in the CMS NPPES registry as a Hematology & Oncology Physician provider holding M.D. credentials at 287 HEALTHWEST DR, DOTHAN, AL, 36303, with a listed phone of (334) 792-9500. NPI 1124128046 was issued on 09/22/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUNN most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 1,972 prescription claims written by this provider, covering 299 Medicare beneficiaries and totaling roughly $4.4 million in drug spend, split 19% brand-name and 81% generic by claim count, with an opioid prescribing rate of 27.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 100/100 for the 2023 performance year (Quality 98.2483), compared with the national average of 83.1.

Hematology & Oncology Physician is a mid-sized specialty nationwide, with 11,215 enrolled providers across 54 states and an average of 847 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

287 HEALTHWEST DR
DOTHAN, AL 36303

Provider Details

NPI 1124128046
Specialty Hematology & Oncology Physician
Credentials M.D.
Gender Male
NPI Issued 09/22/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

100
Final Score
Avg: 83.1
98.2483
Quality

Reporting: Group practice

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for JOHN DUNN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$2.6K

Largest payer

PFIZER INC.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Brand vs generic prescribing mix · Typical

JOHN DUNN, M.D. — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 1,972 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

1,972
Total Claims
$4.4M
Total Drug Cost
299
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,411
Total Day Supply
62,689
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$3.9M
Generic Drug Cost
$489K
Opioid Claims
539 (27.3% rate)
Antibiotic Claims
20

Patient Demographics

Average Patient Age
71.0 years
Avg HCC Risk Score
2.24
Gender Split
66% female / 34% male
Age Distribution
<65: 56, 65-74: 112, 75-84: 105, 85+: 26

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
229
Anastrozole
144
Gabapentin
112
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
83
Hydroxyurea
81
Eliquis
Apixaban
66
Oxycodone Hcl
53
Ondansetron Hcl
52
Tramadol Hcl
49
Letrozole
43

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Hematology & Oncology Physician Overview

How JOHN DUNN, M.D. fits within the Hematology & Oncology Physician landscape nationally.

11,215
Hematology & Oncology Physician Providers in US
54
States with Hematology & Oncology Physician
847
Avg Claims per Provider

JOHN DUNN, M.D.'s 1,972 claims are above the specialty average of 847.

Nearby Hematology & Oncology Physician Providers in Alabama

Other clinicians with the same primary specialty enrolled in Alabama, drawn from the same CMS NPPES roster as DUNN.

Compare Hematology & Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is JOHN DUNN, M.D.'s specialty?
JOHN DUNN, M.D. specializes in Hematology & Oncology Physician and practices in DOTHAN, Alabama. Credentials: M.D..
How much does JOHN DUNN, M.D. prescribe under Medicare Part D?
In 2023, JOHN DUNN, M.D. wrote 1,972 Medicare Part D claims totaling $4.4M in drug costs for 299 beneficiaries.
What is JOHN DUNN, M.D.'s Medicare quality score?
JOHN DUNN, M.D. has a CMS MIPS Final Score of 100/100 (Quality: 98.2483). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is JOHN DUNN, M.D. located?
JOHN DUNN, M.D. is located at 287 HEALTHWEST DR, DOTHAN, AL, 36303. Phone: (334) 792-9500.
What is JOHN DUNN, M.D.'s NPI number?
JOHN DUNN, M.D.'s National Provider Identifier (NPI) is 1124128046, issued on 09/22/2006.
Does JOHN DUNN, M.D. prescribe more brand-name or generic drugs?
JOHN DUNN, M.D.'s prescribing is 19% brand-name and 81% generic drugs by claim count, with $3.9M in brand drug costs.
Does JOHN DUNN, M.D. prescribe opioids?
Yes, JOHN DUNN, M.D. had 539 opioid claims in 2023 with an opioid prescribing rate of 27.3%.
How many Hematology & Oncology Physician providers are there in the US?
There are 11,215 Hematology & Oncology Physician providers across 54 states in the US. The average Hematology & Oncology Physician provider writes 847 Medicare Part D claims per year.
What drugs does JOHN DUNN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JOHN DUNN, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Anastrozole, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOHN DUNN, M.D. accept Medicare?
JOHN DUNN, M.D. appears in CMS Medicare data with 1,972 Part D claims and 299 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOHN DUNN, M.D.'s credentials?
JOHN DUNN, M.D.'s NPI is 1124128046 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology